As always with brown dwarfs, the results are much more far - reaching than people often realize: brown dwarfs are excellent proxies for giant exoplanets: often what we can not learn from giant exoplanets we learn from brown dwarfs. (distantearths.com)
Still, the fund is an excellent proxy for the global stock market. (etf.com)
Age is an excellent proxy for thickness and inverse salt content. (realclimate.org)